Micro-nanofiber sensor used for detecting dissolved hydrogen in transformer oil

The invention discloses a micro-nanofiber sensor used for detecting dissolved hydrogen in transformer oil. The micro-nanofiber sensor comprises a laser transmitter, a micro-nanofiber, a photoelectric detector and a control module, wherein the micro-nanofiber is placed in to-be-detected transformer oil; the surface of the micro-nanofiber is coated with a hydrogen-sensitive film; the output terminal of the laser transmitter is connected with the input terminal of the micro-nanofiber via a connection fiber; the control terminal of the laser transmitter and the output terminal of the photoelectric detector are electrically connected with the control module separately; and the control module controls the transmission parameters of the laser transmitter and calculates the concentration of hydrogen according to a power signal output by the photoelectric detector. The micro-nanofiber sensor provided by the invention overcomes the shortcomings of conventional optical-fiber hydrogen sensors and improves the vibration r